JPH0626997Y2 - Loading device for magnetic recording / reproducing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a loading device of a magnetic recording / reproducing apparatus such as a video tape recorder (VTR).

<Outline of the Invention> The present invention is intended for a loading device of a magnetic recording / reproducing device such as a VTR by using a spring as one of the components of the device to simplify the mechanism and save space. .

<Prior Art> FIG. 4 shows a rear view of a VTR loading device which has been conventionally used.

Two shafts 109 and 110 implanted on a base (not shown)
Is a gear 101 in which a gear 101a and a gear 101b are integrally formed.
Is rotatably inserted, and the gear 105 is similarly inserted in the other. Each of the gears is provided with a lever 102 or a lever 106 which is coaxial and is spring-coupled in the circumferential direction. Each lever and the pole base device (104 or 108) form a link by a flat plate (103 or 107).

The rotational force input from the gear 101a is transmitted to the gear 101b,
It is transmitted to the lever 102, the flat plate 103, and the pole base device 104, moves to the alternate long and short dash line in the figure, and pulls out the tape from the cassette. On the other hand, the rotational force is transmitted from the gear 101b to the gear 105, and is transmitted to the lever 106, the flat plate 107, and the pole base device 108 in the same manner as described above to achieve the desired target.

<Problems to be Solved by the Invention> However, in the above-described conventional VTR loading device, the rotation angle of the lever 102 (to 106) is large, and other components are provided within the lever movement range (shown in the figure). Could not be achieved, which was an obstacle to downsizing the VTR device.

<Means for Solving the Problems> The present invention aims to eliminate the above-mentioned drawbacks of the prior art, and a rotatably mounted spring including a moving element for moving the pole base device and a part of the moving element. And are provided.

<Operation> Then, the loading device of the magnetic recording / reproducing apparatus configured as described above operates as follows. That is, by rotating the spring, the mover in the spring is moved along the spiral of the wire, the pole base device is moved to a predetermined position, and brought into contact with the position fixing device. Further, the spring is rotated to increase the spring wire pitch after the projecting portion of the moving element, thereby press-contacting the pole base device.

<Embodiment> The details of the loading device of the magnetic recording / reproducing apparatus of the present invention will be described below with reference to the embodiments shown in FIGS.

FIG. 1 shows a rear view of the present invention.

In FIG. 1, both ends of a spring 1 are fixed to a bevel gear 2 and an end piece 3, and each is rotatably attached to bearings 4a and 4b provided on a base 4. On the other hand, from the driving device (not shown) through the timing belt 5, the bearing portions 4c, 4d
Thus, one end rotatably supported at both ends is transmitted to one grooved pulley of the relay gear 6 having two grooved pulleys in addition to the bevel gear. The bevel gear of the relay gear 6 meshes with the bevel gear 2 to transmit the driving force. The other grooved pulley transmits the driving force to the grooved pulley portion of the driven gear 8 via the timing belt 7.

Similarly to the above, the bevel gear of the driven gear 8 has a bevel gear 9 at both ends thereof, which is rotatably supported at both ends by bearing portions 4e, 4f provided on the base 4, and a bevel gear 9 through a spring 11 to which an end piece 10 is fixed. Driving force is transmitted.

Further, FIG. 2 shows a detailed view around the moving element 13 according to the present invention. In FIG. 2, the moving element 13 is a spring 1 (or 11).
The protrusion 13a is included in the inside and protrudes from between the wires, and is rotatably attached to the slider 14. The slider 1
4 is a tape pull-out, and a guide roller 18 which is a traveling component.
Is fixed to the pole base device 17 screwed with the screw 15.

When the spring 1 (or 11) is rotated counterclockwise (toward the back of the paper), the protrusion 13a of the moving element 13 moves along the spiral of the wire, and this movement causes the guide roller 18 on the pole base device 17 to move. Pull out the tape (pull out in the right-hand direction on the paper).

FIG. 3 shows a pole base crimped state according to the present invention.

The moving operation of the pole base 17 is continued until it comes into contact with the position fixing device 19. Even after contact, the spring 1 (or 1
When 1) is rotated, only the wire of the spring 1 (or 11) moves to the left, the wire pitch becomes sparse as shown in part A of FIG. 3, and a force for pressing the mover 13 to the right is generated. The pole base device 17 is crimped to the position fixing device 19.

<Effects of the Invention> Since the loading device of the magnetic recording / reproducing apparatus of the present invention has the above-mentioned configuration, a large space can be secured near the mechanism portion and the center, and other mechanical parts can be constructed, which is suitable for downsizing. Moreover, the structure can be simplified by using a spring for the movement and pressure contact of the pole base.

[Brief description of drawings]

FIG. 1 is a rear view showing an embodiment of a loading device of a magnetic recording / reproducing apparatus of the present invention, and FIG. 2 is a side view of an embodiment of a loading device of a magnetic recording / reproducing apparatus of the present invention during movement of a pole base, FIG. 3 is a side view of an embodiment of the loading device of the magnetic recording / reproducing apparatus of the present invention when the pole base is pressed, and FIG. 4 is a rear view of the loading device of the conventional magnetic recording / reproducing apparatus. In the drawings, 1 is a spring, 13 is a slider, 14 is a slider,
7 is a pole base device, and 19 is a position fixing device.

Claims (1)

[Scope of utility model registration request] 1. A spring extending substantially along a loading guide groove,
The spring is composed of a pole base device and a mover having a protrusion that is rotatably attached to the inside of the spring and protrudes from between the strands. A loading device for a magnetic recording / reproducing apparatus, wherein a pole base device, which is moved along the spring spiral and is connected to the mover, pulls out a tape from a cassette to a predetermined position and further press-bonds the pole base.